This article is cited in 3 papers

Low dimensional systems

Influence of the short-range order in FeCoZr nanoparticles on the electrical and magnetotransport properties of FeCoZr–CaF$_2$ nanocomposites

Yu. V. Kasyuk^a, Yu. A. Fedotova^a, I. A. Svito^a, Yu. E. Kalinin^b, A. V. Sitnikov<sup>b

a</sup> National Scientific and Educational Centre of Particle and High-Energy Physics, Belarusian State University, Minsk, 220040, Belarus
^b Voronezh State Technical University

Abstract: This paper reports on the results of the $^{57}$Fe Mössbauer investigation of the short-range order in FeCoZr nanoparticles and also the studies of the electrical and magnetotransport properties of (FeCoZr)$_x$ (CaF$_2$)$_{100-x}$ granular nanocomposite films in the concentration range $x$ = 16–75 at%. A correlation between the oxygen partial pressure during the synthesis of nanocomposites and the magnetic state of iron-containing nanoparticles has been established. The influence of the oxidation of metallic particles on the electron transport mechanisms and on the magnetoresistance of the films has been analyzed. It has been found that, in the nanocomposites with a high FeCoZr concentration ($x\sim$ 70–75 at%), there is a preferred orientation of the magnetic moments of $\alpha$-FeCo(Zr) nanoparticles in the direction perpendicular to the film plane.

Received: 06.03.2012

 English version: Physics of the Solid State, 2012, 54:10, 2091–2099

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